Provided by: liblapack-doc_3.12.0-3build1.1_all bug

NAME

       laswp - laswp: swap permutation

SYNOPSIS

   Functions
       subroutine claswp (n, a, lda, k1, k2, ipiv, incx)
           CLASWP performs a series of row interchanges on a general rectangular matrix.
       subroutine dlaswp (n, a, lda, k1, k2, ipiv, incx)
           DLASWP performs a series of row interchanges on a general rectangular matrix.
       subroutine slaswp (n, a, lda, k1, k2, ipiv, incx)
           SLASWP performs a series of row interchanges on a general rectangular matrix.
       subroutine zlaswp (n, a, lda, k1, k2, ipiv, incx)
           ZLASWP performs a series of row interchanges on a general rectangular matrix.

Detailed Description

Function Documentation

   subroutine claswp (integer n, complex, dimension( lda, * ) a, integer lda, integer k1, integer
       k2, integer, dimension( * ) ipiv, integer incx)
       CLASWP performs a series of row interchanges on a general rectangular matrix.

       Purpose:

            CLASWP performs a series of row interchanges on the matrix A.
            One row interchange is initiated for each of rows K1 through K2 of A.

       Parameters
           N

                     N is INTEGER
                     The number of columns of the matrix A.

           A

                     A is COMPLEX array, dimension (LDA,N)
                     On entry, the matrix of column dimension N to which the row
                     interchanges will be applied.
                     On exit, the permuted matrix.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.

           K1

                     K1 is INTEGER
                     The first element of IPIV for which a row interchange will
                     be done.

           K2

                     K2 is INTEGER
                     (K2-K1+1) is the number of elements of IPIV for which a row
                     interchange will be done.

           IPIV

                     IPIV is INTEGER array, dimension (K1+(K2-K1)*abs(INCX))
                     The vector of pivot indices. Only the elements in positions
                     K1 through K1+(K2-K1)*abs(INCX) of IPIV are accessed.
                     IPIV(K1+(K-K1)*abs(INCX)) = L implies rows K and L are to be
                     interchanged.

           INCX

                     INCX is INTEGER
                     The increment between successive values of IPIV. If INCX
                     is negative, the pivots are applied in reverse order.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

             Modified by
              R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA

   subroutine dlaswp (integer n, double precision, dimension( lda, * ) a, integer lda, integer
       k1, integer k2, integer, dimension( * ) ipiv, integer incx)
       DLASWP performs a series of row interchanges on a general rectangular matrix.

       Purpose:

            DLASWP performs a series of row interchanges on the matrix A.
            One row interchange is initiated for each of rows K1 through K2 of A.

       Parameters
           N

                     N is INTEGER
                     The number of columns of the matrix A.

           A

                     A is DOUBLE PRECISION array, dimension (LDA,N)
                     On entry, the matrix of column dimension N to which the row
                     interchanges will be applied.
                     On exit, the permuted matrix.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.

           K1

                     K1 is INTEGER
                     The first element of IPIV for which a row interchange will
                     be done.

           K2

                     K2 is INTEGER
                     (K2-K1+1) is the number of elements of IPIV for which a row
                     interchange will be done.

           IPIV

                     IPIV is INTEGER array, dimension (K1+(K2-K1)*abs(INCX))
                     The vector of pivot indices. Only the elements in positions
                     K1 through K1+(K2-K1)*abs(INCX) of IPIV are accessed.
                     IPIV(K1+(K-K1)*abs(INCX)) = L implies rows K and L are to be
                     interchanged.

           INCX

                     INCX is INTEGER
                     The increment between successive values of IPIV. If INCX
                     is negative, the pivots are applied in reverse order.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

             Modified by
              R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA

   subroutine slaswp (integer n, real, dimension( lda, * ) a, integer lda, integer k1, integer
       k2, integer, dimension( * ) ipiv, integer incx)
       SLASWP performs a series of row interchanges on a general rectangular matrix.

       Purpose:

            SLASWP performs a series of row interchanges on the matrix A.
            One row interchange is initiated for each of rows K1 through K2 of A.

       Parameters
           N

                     N is INTEGER
                     The number of columns of the matrix A.

           A

                     A is REAL array, dimension (LDA,N)
                     On entry, the matrix of column dimension N to which the row
                     interchanges will be applied.
                     On exit, the permuted matrix.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.

           K1

                     K1 is INTEGER
                     The first element of IPIV for which a row interchange will
                     be done.

           K2

                     K2 is INTEGER
                     (K2-K1+1) is the number of elements of IPIV for which a row
                     interchange will be done.

           IPIV

                     IPIV is INTEGER array, dimension (K1+(K2-K1)*abs(INCX))
                     The vector of pivot indices. Only the elements in positions
                     K1 through K1+(K2-K1)*abs(INCX) of IPIV are accessed.
                     IPIV(K1+(K-K1)*abs(INCX)) = L implies rows K and L are to be
                     interchanged.

           INCX

                     INCX is INTEGER
                     The increment between successive values of IPIV. If INCX
                     is negative, the pivots are applied in reverse order.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

             Modified by
              R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA

   subroutine zlaswp (integer n, complex*16, dimension( lda, * ) a, integer lda, integer k1,
       integer k2, integer, dimension( * ) ipiv, integer incx)
       ZLASWP performs a series of row interchanges on a general rectangular matrix.

       Purpose:

            ZLASWP performs a series of row interchanges on the matrix A.
            One row interchange is initiated for each of rows K1 through K2 of A.

       Parameters
           N

                     N is INTEGER
                     The number of columns of the matrix A.

           A

                     A is COMPLEX*16 array, dimension (LDA,N)
                     On entry, the matrix of column dimension N to which the row
                     interchanges will be applied.
                     On exit, the permuted matrix.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.

           K1

                     K1 is INTEGER
                     The first element of IPIV for which a row interchange will
                     be done.

           K2

                     K2 is INTEGER
                     (K2-K1+1) is the number of elements of IPIV for which a row
                     interchange will be done.

           IPIV

                     IPIV is INTEGER array, dimension (K1+(K2-K1)*abs(INCX))
                     The vector of pivot indices. Only the elements in positions
                     K1 through K1+(K2-K1)*abs(INCX) of IPIV are accessed.
                     IPIV(K1+(K-K1)*abs(INCX)) = L implies rows K and L are to be
                     interchanged.

           INCX

                     INCX is INTEGER
                     The increment between successive values of IPIV. If INCX
                     is negative, the pivots are applied in reverse order.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

             Modified by
              R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA

Author

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